Emily DID hear her phone when it rang, but since she was already well on her way home, and knowing her sister, she would panic at the lack of an immediate answer. But she was driving, and answering while driving was way to dangerous. So, she waited to be on the parking lot before calling back. (She would wonder how either Stefanie or Melissa accessed the phone later.)
"It's Em', sorry I didn't call sooner, but I couldn't do it while driving Serenity back home. Speaking of Serenity, you'll never guess what I discovered!"
"She have multiple personality," answered Stef' "we know. Now hurry up and take her to the apartment!"
"How do you…" Started to ask the older sister, but before she could finish her question, Stef' hung up.
Shaking her head, Emily put away her phone before helping Serenity up the stairs. (It was quite clear she wasn't used to having legs, unlike her other personality, ‘Laurna’.)
Upon entering her apartment, Emily got two surprises. First Jillian, her landlord's daughter, living in her own apartment somewhere on the third floor, peacefully chatting with Melissa, like speaking with a mermaid was an everyday occurrence. Secondly, her sister had legs again.
As soon as she saw Jillian, Serenity switched back into Laurna and jumped at her niece, wanting to strangle the sea-princess. (Thankfully, she was still cuffed by the rilsan® around her wrists.)
"Hello, ‘aunt’ Laurna." Coldly said Jillian, her face the picture of seriousness. "I sincerely hoped that we would never meet."
This prompted Emily to scream "WHAT?!?"